Sound reproducer



Ail@ 23 1932; s. A. soLLlE 1,873,106.21 v

n "sounn REPRQDUGER Original Filed, Jan. 21, 1928 Patented Aug. 23, 1932 atrium) LIsoLLmor- PALO wrang-mom AssrGNoa'ro FEDERAL 'rnLEGnArH tY fcontraint, or sANrmcIscoycALnoaNIA. A vconromvrrorr or CALIFORNIA SOUND RErRivCEa f k"Applimitni area ianuary `21. was.` seria1 `No./24s,4oa.,"aenewaAugier aises. f

W My invention relates broadly to electromagnetic sound 'reproducers and-more par- Y tieularly toa sound reproduoer ofthe conical diaphragm type. .Y

'One of the objects ofmy invention is to 'provide amethod of supportingan'V armature "coil withfrespectto'a conical shapedsund AY'reproducing,diaphragm by which soundvi- 'y n "ence y, character T1 designates thesoun d repro'' "ducing diaphragm which is substantially in the yshape ofthe frustum of a cone terminatbrations maybe imparted l,to the 'diaphragm d 101 uniformly ata section thereof.'

l Another objectof my invention isto pro- "vide aconstruction of armature membcrffor a conicaly shaped soundfreprducing"diaphragm wherein a rigid connection may be made bci tween the sound yreproducing diaphragm, the

:Suspensionmeans thereforjandthe Support "for the 'armature coil;y e I n.

sau another Object of my riverine-n ig to y Y Hprovide acon'struc'tion of support `oran armature Winding forfdriving a conicall shaped "sound reproducing diaphragm, whereinI ythe 'sound reproducing Adiaphragm extends into 'a'n `anmilar channel Vformed in the support 'and intcwhic'h thesu'spension means for the "It sound; reproducing diaphragm is also arranged toffext'end. y

' yOther and further objects of my invention Awill-be understo'od from the speciiic'ation hereinafter following by referenceto the acocompanying drawing, in which: n

Figure 1 is a side elevation lofthe sound reproducing diaphragm partially broken Zaway and showing thearmature member in -cro'ss section; "Fig: 2 is an enlargedcross-secl -tionalviewthrough `the armature member -showingthe-suspension means and cone in the ,process ofv beingapplied to the armature member. Fig.4 3 is a cross-sectional view of 1the armature member and suspensiongmeans jsecured to thel cone diaphragm;v and lFigli is va plan view of the suspension means employed in the sound reproducer of my invention.

' 5 linvention isl directed to thaty class of sound reproducingdiaphragm rset forth ymore 15' articularly in the Kolster-Sollie United tates Patent No. 1,637 ,119, dated .July 26, 1927, The suspension means employed the .sound reproducer of my invention is more *clearl setforth in copending application "Seria No. 224,738,1iled January 5, 1928.`

,myy inventiomIS provide a'simplified method of assemblyfor the armature windging support "and ,ther cone yandy suspension meal-ns ywhereby the manufacture 4andrproduc- -tiony of thel sound reproducer *may be carried ron with greater Veconomy and the manufacturingprocesses rendered more practical. Referring to the drawing Iin detail, refering in; an annularsection at the rawy edge 2.

The winding support is'designated at Sin the "form ofan insulatedtube having a groove .il l'formed therein to receive an armaturewinding and ya Grooverjifformed vtherein, to Yreceive the raw edge 2 of the cone... An armature gwinding 6 is found between the annulargwalls `7 and 8 formed on the 'tubular memberr` The end wall 9 of the tubular-member l3 is 'substantially conical shaped ati 10 to conform with the pitch of the cone shaped diaphragm 1. The suspensionmeans for thediaphragm is formed from a resilient metal Spider-,represented at 11 having'arm's 12 and an'annular extension-14' thereon. The annular extension 14isshown in Fig. 2'preparatoryto an operaytion '-by'which the cone 1/is` rolled into the groove 5' ofthe' armature member 3'.

11i-Fig. 3, the cone 1 is shown completely'l rolled into the groove 5 andrigidly anchored in place bythe annularfportion14 of the and from this? wall-the arms20 protrude'to points upon'pl'ate member 21 ofthe electro- "dynarnic driving unit. The driver for the conefincludes ya field winding 22, casing 23, yand ycentral polepiece 24 arranged to provide an annular gap 25' in which thearmature sup- 'port 3 is centered.' YPedestals r26 extend from platel21 for supporting the spider 114 injsuch "ppsitio'n' that winding 6 is' suspended within ,te Y

l; f T [e method 4of yforming the sound repro- A'ducing' diaphragm "interlocked with the yarmature tube has been found to be extremely practica-l and desirable in construction, and while I have described one of t-he preferred embodiments of my invention, I desire that it be understood that modifications may be made and that no limitations upon my invention are intended other than are imposed by the scope of the appended claims.

What I claim as new and desire to secure by Letters Patent of the United States Ais as follows:

l. In a sound reproducer, a conical shaped sound reproducing diaphragm, a cylindrical supporting member carrying a winding, said cylindrical supporting member having an annular grove formed therein, and a resilient suspension member conforming to the contour of said conical shaped sound reproducing diaphragm and providing an anchoring means for locking said conical shaped sound reproducing diaphragm within said groove and said cylindrical support.

2. In a sound reproducer, a sound re ro- `ducing diaphragm substantially in the orm ofa frustum of a cone, a cylindrical coil support having an annular groove formed therein, a resilient suspension member embracing said conical shaped sound reproducing diaphragm and having a portion thereof extending parallel to the surface of said soundreproducing diaphragm and protruding into said annular groove in said cylindrical coil support for anchoring said conical shaped diaphragm with respect to said cylindrical coil support.

3. In a sound reproducer, a sound reproducing diaphragm substantially in the form of a frustiun of a cone, a cylindrical coil .support projecting through one end of said sound reproducing diaphragm having an annular groove formed therein for receiving Ythe annular extremity of said conical shaped sound reproducing diaphragm, a suspension member embracing said conical shaped sound reproducing diaphragm andfproviding a sealing means for the extremity of said conical shaped sound reproducing diaphragm within .said annular groove for establishing a rigid connection between said conical shaped sound reproducing diaphragm and said cylindrical coil support.

4. A sound reproducer comprising a sound reproducing diaphragm substantially in the form of a` frustum of a cone, a cylindrical coil support projecting through one end of said sound reproducing diaphragm, said cylindrical coil support having an annular groove adjacent one end thereof, one side of said groove forming an abutment for the edge of said conical shaped sound reproducing diaphragm, and the other Wall of said groove conforming to the pitch of said sound reproducing diaphragm, and suspension means embracing said diaphragm in a position intermediate the peripheral edges thereof, said suspension means extending into the annular groove on said cylindrical coil support and providing means for locking said diaphragm within said groove.

5. In a sound reproducer, a sound reproducing diaphragm substantially in the form of a frustum of a cone, a cylindrical coil support extending through one end of said dia.- phragm and having an annular groove formed in the surface thereof, one end of said groove providing an abutment for the peripheral edge of said diaphragm, and the other end of said groove being shaped to conform to the pitch of said diaphragm,and a suspension member embracing said diaphragm and conforming to the shape thereof, said means abutting against one wall of said groove and uniting said diaphragm with said cylindrical coil support.

6. In a sound reproducer, a sound reproducin diaphragm substantially in the form of a rustum of a cone, a coil support projecting through one end of said diaphragm, said coil support having a flange formed thereon providing an abutment with the edge of said diaphragm, and a suspension memmediately adjacent the surface of said dia` phragm for unit-ing said diaphragm with respect to said coil support.

7. In a sound reproducer, a sound reproducing diaphragm substantially in the form of a frustum of a cone having an annular extremity, a cylindrical coil support projecting through one end of said sound reproducing diaphragm and receiving the annular extremity of said conical shaped sound reproducing diaphragm, a suspension member embracing said cylindrical coil support and also the conical extremity of said sound reproducing diaphragm next to said annular extremity, thereby establishing a rigid connection between said conical shaped sound reproducing diaphragm and said cylindrical coil support.

8. In a sound reproducer, a conical shaped sound reproducing diaphragm, a cylindrical suporting member carrying a Winding and having an annular groove formed therein, n. resilient suspension member a portion of which conforms with the conical surface of said sound reproducing diaphragm, said member providing locking means whereby a portion of said sound reproducing diaphragm is anchored within said groove.

9. A coil mounting for cone speakers comprising a. cylindrical member adapted to be secured to the apex of a cone and sup ort a current-carrying winding, and a flat exible supporting member extending from said cylindrical portion adapted to engage fixed supports, said supporting .member being secured upon ksaid cylindrical portion intermediate the ends thereof by disposin it a ainst ak shoulder upon said cylindrica mem the projecting end of the cylindrical member flarmg outwardly against said flexible member opposite said shoulder. f

10. A support for the coil-carrying end of loud speaker cones comprising a cylindrical member adapted to be secured to the apex of the cone and support a ycurrent-c :arrying winding, a at flexible member roject-ing outwardly from the surface of said) cylindrical member, and means for securing said flexible member to said cylindrical member consisting of a shoulder formed u on said cylindrical member contacting witll one side of said flexible member, said cylindrical member flaring against said flexible member opposite said shoulder.

In testimony whereof I ax m signature.

SIGURD A. OLLIE. 

